Originally Posted by Unregistered

No. It's much more likely the turn limit was reached. 100 turns/squad if I'm not mistaken.

There was a bug wherein the boss from one event (Gentian) didn't attack at all that a single unleveled 2* could survive for many turns!

The turn cap is not exclusive to raid boss fights. It's also enforced on maps, including but not limited to those with loops (like the coin daily).

Yes, I understood he reached a turn limit. My thought was just that if you hit that limit you've got more defense than is strictly needed, and maybe swapping in an offensive ability would be useful. However it's still 10x more damage than my good team does which is impressive, and if 3 units were down when the turn timer ran out it's probably not complete defense overkill.